Tag: aws
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IAM Auth for Django Database: passwordless, not painless
TL;DR: Adding IAM Auth requires increasing the RDS server at least 4x the cost for a server with password auth, and likely much more for production. This makes it non-viable for our immediate use-case with a relatively low-stress app. Goal: no database passwords in code/configs We’re running a Wagtail CMS site (built on Django) and…
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Serverless Step Functions with Callback
This is a demo of how you can use the “callback” pattern to restart a Step Functions state machine from within a Lambda function. It took me a while to dig through the AWS docs, sample code, and examples to unlock the mysteries, so I hope it saves you some time. It is inspired by…
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Lambda-generated Presigned S3 URLs with AES encryption: CORS is Hell
This is a followup to a previous post on how we use Lambdas to generate presigned URLs so that a user’s browser can directly upload to S3. We now want to have our S3 bucket enforce server-side encryption for all uploaded files. Getting all the pieces to work together was a bit hairy: bucket policies,…
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Serverless Browser Uploads to S3
We’ve been diggin’ the serverless ecosystem around AWS Lambda, API Gateway and the rest, especially using the Serverless Framework which makes it easy to define interesting applications. We frequently have a need to upload files from a user’s desktop to AWS S3 storage, and prefer to have the browser upload directly, rather than passing the…
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Serverless Optical Character Recognition in Support of NASA Astronaut Safety
Chris Shenton, CTO, V!Studios The NASA Extravehicular Activity (EVA) Office at NASA Johnson Space Center (JSC) needed to be able to search and make decisions based upon a huge volume of spacesuit safety and test documentation, many of which were only available as scans of paper reports. Timeliness was critical, especially in the event of…
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Automatic Swarm of Ephemeral Servers Extract Text to Improve NASA Astronaut Safety
V! Studios develops high volume solution for extracting text from scanned documents faster and cheaper for NASA’s Johnson Space Center by utilizing Amazon Web Services (AWS) Lambda serverless technology. V! Studios, a creative technologies company, has developed a new high-speed, low-cost cloud-based solution for optical character recognition (OCR) and text extraction. Standard OCR software extracts…
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Accessing NASA Digital Media Now Easier With New Library Search Engine
TYSONS, VA (PRWEB) MARCH 28, 2017 By leveraging cloud computing and storage capabilities, V! Studios developed a highly scalable, cost efficient multimedia library for NASA at images.nasa.gov, which officially launched to the public on March 28, 2017. NASA, like many other government agencies, is challenged with compiling, archiving, and retrieving massive amounts of digitized content. Prior to this…
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Design Patterns for Serverless, Lambda, DynamoDB, S3
Motivation We’ve been using AWS load balancers with autoscaling instances for years now and it’s great at handling load, but it’s quite a bit of infrastructure to manage (even with Troposphere + CloudFormation). We also have to manage all the data flow, queue processing and such ourselves: multiple SQS queues, EC2 polling, recording state in databases… More…
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AWS VPC Networking demystified : Part 1 – VPC IP Addressing and Routing
This is the first of a three part series on how Amazon’s VPC (Virtual Private Cloud) networking works, and how to create a VPC and provision resources within a it. First things first, what is a VPC? Amazon’s VPC documentation explains it this way : “Amazon Virtual Private Cloud (Amazon VPC) enables you to launch Amazon…